Tharnus, Undead Bane

Double Strike, Undying
{b}{w}{t}: Deal 3 damage to target Skeleton, Zombie,
or Vampire.
When Tharnus enters the battlefield roll a D20.
1-9: Give Tharnus a +1/+0 counter and haste until
end of turn.
10-19: Tharnus gain’s Menace and haste until
end of Turn.
20: Tharnus gets a permanent +2/+2 counter.